Animations that change when the device moves are one example of UX-driven interactivity.
Answer the following statement true (T) or false (F)
True
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A one-pass condenser-heat exchanger, shown in the sketch, has 64 tubes arranged in a square array with 8 tubes per line. The tubes are 1.22 m long and are made of copper with an outside diameter of 1.27 cm. They are contained in a shell at atmospheric pressure. Water flows inside the tubes whose outside wall temperature is 98°C. Calculate (a) the rate of steam condensation and (b) the temperature rise of the water if the flow rate per tube is 0.0454 kg/s.
GIVEN
? One-pass condenser heat exchanger with 64 tubes in a square array
FIND
(a) Rate of steam condensation
(b) Water temperature rise
SKETCH
PROPERTIES AND CONSTANTS
From Appendix 2, Table 13, the properties of saturated water at the film temperature (100 + 98)/2 = 99°C are
Why do stars rise and set from our viewing in Athens over the course of the night?
Due to the orbital period of the Earth. Due to the rotation of the Earth. Due to the revolution of the Earth. Due to the rotation of the celestial sphere.
At a depth of about 1030 m in the sea, the pressure has increased by 100 atmospheres (to 1.0 × 107 N/m2). By how much has 1.0 m3 of water been compressed by this pressure? The bulk modulus of water is 2.3 × 109 N/m2
A) 2.3 × 10-3 m3 B) 3.3 × 10-3 m3 C) 4.3 × 10-3 m3 D) 5.3 × 10-3 m3 E) 6.3 × 10-3 m3
The figure below shows a planet traveling in a clockwise direction on an elliptical path around a star located at one focus of the ellipse. When the planet is at point A,
a.
its speed is constant.
b.
its speed is increasing.
c.
its speed is decreasing.
d.
its speed is a maximum.
e.
its speed is a minimum.